Colour blindness and Haemophilia are the two genetic diseases expressed in the human population.

Interspecific and Intraspecific struggle.

The following are the two adaptations in the Sundari plant for tolerance of salt:

1. Sundari plants possess succulent leaves and stem.
2. They possess thick-walled cutinized epidermis with hairy covering.

Chimpanzees are quite clever and can prepare a tool with a small tree branch. After defoliating the tip of the twig, it is crushed to prepare it like a brush. Then the brush is inserted into the termite mound. This stick-like brush is then pulled out when quite a good number of termites may be collected for eating.

1. Greenhouse gas: Causes global warming, climate change, and sea-level rise.
2. SPM (Suspended Particulate Matter): Leads to respiratory problems, heart disease, and air pollution.
3. Chemical fertilizers: Causes soil degradation, water pollution (eutrophication), and loss of biodiversity.
4. Non-biodegradable chemical insecticide: Accumulates in the food chain (bioaccumulation), harms wildlife, and contaminates soil and water.

(i) European gipsy math, (ii) European starting

(i) Zebra Musscle (ii) Chinese Mittuch crab

The crocodile reserve project was started.

The Bhagabatpur Crocodile Reserve project is situated in West Bengal to conserve crocodiles.

(i) Food (ii) Skin (iii) Horns (iv) Ivory etc

Diagram of a neurone

The diagram of the anaphase

1. Dendrites: Receive electrical signals from other neurons.
2. Cell body: Contains the nucleus and other organelles.
3. Axon: Transmits electrical signals to other neurons.
4. Myelin sheath: Insulates the axon and speeds up the signal transmission.
5. Schwann cells: Produce the myelin sheath.

Here are three changes that occur in the anaphase stage of mitosis in animal cells:

1. The sister chromatids separate and move to opposite poles of the cell. This is caused by the breakdown of the cohesin proteins that hold the sister chromatids together.
2. The spindle fibres shorten, pulling the chromosomes apart. This is caused by the activity of the motor proteins on the spindle fibres.
3. The nuclear envelope reforms around each set of chromosomes. This is caused by the assembly of new nuclear membranes around the chromosomes.

Here are the names of two structural parts of the eukaryotic chromosome:

1. Centromere: The centromere is the region of the chromosome where the sister chromatids are attached.
2. Telomere: The telomere is the end of the chromosome. It is a repetitive sequence of DNA that protects the chromosome from damage.